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-rw-r--r--arch/powerpc/kernel/exceptions-64e.S6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index 316465a32a9c..5c43063d2506 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -191,6 +191,12 @@ exc_##n##_bad_stack: \
sth r1,PACA_TRAP_SAVE(r13); /* store trap */ \
b bad_stack_book3e; /* bad stack error */
+/* WARNING: If you change the layout of this stub, make sure you chcek
+ * the debug exception handler which handles single stepping
+ * into exceptions from userspace, and the MM code in
+ * arch/powerpc/mm/tlb_nohash.c which patches the branch here
+ * and would need to be updated if that branch is moved
+ */
#define EXCEPTION_STUB(loc, label) \
. = interrupt_base_book3e + loc; \
nop; /* To make debug interrupts happy */ \
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